Need Help with Powershell Script

Greeting Experts,
I need some help with a PowerShell script. The purpose of the script is to delete list a of rows, and two columns, and populate” File Name” in column A then “Creation Date” in column B (script below). What I want  to do is instead of putting the creation date in to column B insert the modified date in to the Date column… can someone give me a hand with this issue.  
Column A: File Name: Region1 <No need to change>
Column B Date: Creation Date < Need to change it to the documents modified date>


function Release-Ref ($ref)
{
([System.Runtime.InteropServices.Marshal]::ReleaseComObject([System.__ComObject]$ref) -gt 0)
[System.GC]::Collect()
[System.GC]::WaitForPendingFinalizers()
}

$objExcel = new-object -comobject excel.application
$xlShiftToRight = -4161
$objExcel.Visible = $false 
$Lookupdir="U:\EPOReports\Region1\New folder\"    
$days_backdate=$(Get-Date).AddDays(-1)    
 
$files = Get-ChildItem $Lookupdir -Recurse | where-object {!($_.psiscontainer)}  | where { $_.Creationtime -gt $days_backdate }
foreach ($file in $files)
{
$objWorkbook = $objExcel.Workbooks.Open($file.Fullname)
$objWorksheet = $objWorkbook.Worksheets.Item(1)

$i = 1
$cell=$objWorksheet.Cells.Item($i, 1)

Do {
    If ( $cell.value() -ne "Event Category"  )
      {
            $objRange = $cell.EntireRow
            $objRange.Delete()
            $i-=1
      }
      $i += 1
    $cell=$objWorksheet.Cells.Item($i, 1)
}
While ($cell.value() -ne "Event Category")

$region=$file.FullName.Split("\")[-2]
$date = Get-Date -Format "yyyy_MM_dd"

$objRange = $objExcel.Range("A1").EntireColumn
[void] $objRange.Insert($xlShiftToRight)

$objRange = $objExcel.Range("A1").EntireColumn
[void] $objRange.Insert($xlShiftToRight)


$objWorksheet.Cells.Item(1,1) = "Region"
$objWorksheet.Cells.Item(1,2) = "Date"


$cell=$objWorksheet.Cells.Item($i+1, 3)

While ($cell.value() -ne $null)
 {
            $objWorksheet.Cells.Item($i+1,1)=$Region;
            $objWorksheet.Cells.Item($i+1,2)=$Date;
     $i += 1
    $cell=$objWorksheet.Cells.Item($i+1, 3)
}

$objExcel.displayalerts=$false
$objExcel.activeworkbook.saveas($file.fullname)
$objExcel.Workbooks.Close()
$objExcel.Quit()
}

Release-Ref($objRange)
Release-Ref($objWorksheet)
Release-Ref($objWorkbook)
Release-Ref($objExcel) 

Open in new window

RawFile.xlsx
Final-Results.xlsx
MikeSecurityAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Dan McFaddenSystems EngineerCommented:
The Last Modified info is referenced as:  LastWriteTime when viewed thru Get-ChildItem.

So just change this section of the script from this:

...   where { $_.Creationtime -gt $days_backdate }  ...

to

...  where { $_.LastWriteTime -gt $days_backdate }  ...

You can view all the file attributes by doing the following:
1. create an empty text file.  {example:  test.txt}
2. at PS console, run:  Get-ChildItem -Filter test.txt | select *

This will dump all the attributes for the test.txt file.  Next, add some text to the test.txt file and re-run the command in step #2.  You can see that the LastWriteTime has been updated.

Dan
0
MikeSecurityAuthor Commented:
You may have miss understood the description of my problem.  What I am trying to do is instead of using the creation date of the document. I want to use the modified date of the document and have the script input that information in to column B (i.e. Date)  in the form of YYYY_mm_dd…


 Example
0
footechCommented:
If I'm understanding correctly, you would just need to change line 36 to:
$date = Get-Date $file.LastWriteTime -Format "yyyy_MM_dd"

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
MikeSecurityAuthor Commented:
footech - you hit it dead on... the string correction on Line 36 worked perfect..... thank you
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Powershell

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.